WO2023045603A1 - Châssis et voiture particulière - Google Patents

Châssis et voiture particulière Download PDF

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Publication number
WO2023045603A1
WO2023045603A1 PCT/CN2022/111490 CN2022111490W WO2023045603A1 WO 2023045603 A1 WO2023045603 A1 WO 2023045603A1 CN 2022111490 W CN2022111490 W CN 2022111490W WO 2023045603 A1 WO2023045603 A1 WO 2023045603A1
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WO
WIPO (PCT)
Prior art keywords
longitudinal beam
steering
vehicle frame
shell
frame according
Prior art date
Application number
PCT/CN2022/111490
Other languages
English (en)
Chinese (zh)
Inventor
孙晓伟
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to EP22871661.9A priority Critical patent/EP4289705A4/fr
Publication of WO2023045603A1 publication Critical patent/WO2023045603A1/fr
Priority to US18/351,070 priority patent/US12091087B2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
    • B60G11/10—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B62D3/12—Steering gears mechanical of rack-and-pinion type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/20—Links, e.g. track rods

Definitions

  • the embodiments of the present application relate to the technical field of vehicles, and in particular to a vehicle frame and an automobile.
  • the automobile frame needs to have a crossbeam or a subframe for the box packer to be installed and fixed, so that the tie rod of the steering gear is connected with the steering knuckle on the wheel hub to pull the front wheel of the automobile to rotate.
  • the inventors of the present application found in research that the existing installation method of the steering gear will result in a heavier vehicle body, thereby increasing fuel consumption, and resulting in a decline in product competitiveness in the current environment of energy saving and emission reduction.
  • the embodiments of the present application provide a vehicle frame and a vehicle, so as to ensure the torsional mode and rigidity of the vehicle while reducing the weight of the vehicle body.
  • a vehicle frame including a longitudinal beam and a steering gear;
  • the steering gear includes a casing and a steering tie rod slidably arranged in the casing; two ends of the casing are respectively connected to the The longitudinal beam is fixedly connected; the two ends of the steering rod protrude from the outer side of the longitudinal beam respectively, and are used for flexible connection with the wheels, and the steering rod drives the wheels to turn when sliding.
  • the vehicle frame provided by the embodiment of the present application cancels the crossbeams arranged between the longitudinal beams, and by fixing the two ends of the shell with the longitudinal beams, the load-bearing effect of the shell on the longitudinal beams is realized, thereby ensuring The torsional modes and stiffness of the full vehicle.
  • the longitudinal beam is set on the inner side of the wheel, and the two ends of the steering tie rod protrude from the outer side of the longitudinal beam respectively, and are used for flexible connection with the outer wheel, so that the wheels at both ends are driven to turn by sliding the steering tie rod in the casing, which not only realizes the
  • the fixed assembly and the control of the steering of the wheels also ensure the torsional mode and stiffness of the vehicle.
  • the longitudinal beam is provided with a through hole, and the two ends of the shell are fixed in the through hole; out of the through hole.
  • the two ends of the shell are fixed in the through holes, which not only realizes the assembly and fixing of the shell and the longitudinal beams, but also ensures that the shell plays a good load-bearing role between the longitudinal beams, thereby ensuring the frame
  • the strength and rigidity of the overall structure enable the vehicle to have a good torsional mode during subsequent assembly.
  • a support sleeve is disposed in the through hole, and both ends of the housing are fixed in the support sleeve.
  • the support sleeve is welded to the longitudinal beam.
  • the support sleeve is welded to the longitudinal beam to ensure that the support sleeve is fully limited in the axial direction, thereby improving the stability of the assembly connection between the steering gear and the longitudinal beam, and ensuring the overall strength and bearing capacity of the frame.
  • limiting portions are provided at both ends of the housing, and the limiting portions abut against inner side walls of the longitudinal beams.
  • Limiting parts are arranged at both ends of the housing, and the limiting part abuts against the inner side wall of the longitudinal beam to realize the axial limiting and fixing when the housing of the steering gear and the longitudinal beam are assembled and connected.
  • the limiting portion includes a flange or a protrusion provided on the housing.
  • the flange abuts against the inner side wall of the longitudinal beam to achieve the axial fixation of the steering gear.
  • the axial limit of the shell is realized by the abutment of the protrusion and the inner side wall of the longitudinal beam. Since the protrusion and the shell are integrally structured, the structural stability is higher, and the limit effect of the connection between the shell and the longitudinal beam is better.
  • both ends of the shell protrude outside the stringer, and the shell is provided with an external thread at a position protruding outside the stringer; the external thread is connected to There is a threaded connection which abuts against the outer side wall of the stringer.
  • the two ends of the casing protrude from the outside of the stringer, and the external thread is provided at the position where the casing protrudes outside the stringer, and the threaded connector is connected to the external thread on the one hand, and on the other hand, abuts against the outer wall of the stringer , so as to realize the assembly connection between the part of the shell protruding from the outer side of the longitudinal beam and the longitudinal beam, ensure the structural stability of the steering gear in the frame, and then improve the overall strength and stability of the frame.
  • a gasket is sleeved between the threaded connector and the outer side wall of the longitudinal beam, and the two sides of the gasket are respectively connected to the outer side wall of the longitudinal beam and the outer side wall of the longitudinal beam.
  • the above-mentioned threaded connection is abutted.
  • the gasket is welded to the shell and the longitudinal beam respectively.
  • the stability of the relative position between the gasket, the longitudinal beam and the shell can be further ensured, so that the connection structure between the shell and the longitudinal beam is stable and reliable, and the overall structural strength and integrity of the frame can be guaranteed.
  • the torsional mode of the car is welded to the shell and the longitudinal beam respectively.
  • a car including the vehicle frame as described in any one of the above items.
  • the crossbeams arranged between the longitudinal beams are canceled, and the bearing function of the outer shell on the longitudinal beams is realized by fixing the two ends of the outer shell to the longitudinal beams. , so as to ensure the overall torsional mode and stiffness of the car.
  • the longitudinal beam is set on the inner side of the wheel, and the two ends of the steering tie rod protrude from the outer side of the longitudinal beam respectively, and are used for flexible connection with the outer wheel, so that the wheels at both ends are driven to turn by sliding the steering tie rod in the casing, which not only realizes the
  • the fixed assembly and the control of the steering of the wheels also ensure the overall torsional mode and stiffness of the car.
  • the automobile further includes a front wheel arranged on the outside of the longitudinal beam, the front wheel has a steering knuckle; both ends of the steering tie rod are rotatably connected to the steering knuckle, the When the steering rod slides, the steering knuckle drives the front wheels to turn.
  • the two ends of the steering rod protruding from the outer side of the longitudinal beam are connected with the steering knuckle to realize the steering control of the front wheel by the steering rod, so as to reduce the overall weight of the car and meet the working position conditions of the steering gear assembly.
  • the automobile further includes a leaf spring, the leaf spring is fixedly connected to the housing and the longitudinal beam, and both ends of the leaf spring are fixedly connected to the front wheels.
  • FIG. 1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application.
  • Fig. 2 is the schematic structural diagram of the vehicle frame provided by the embodiment of the present application.
  • Fig. 3 is a schematic structural view of one end of the steering gear in the vehicle frame provided by the embodiment of the present application;
  • FIG. 4 is a schematic structural diagram of an automobile provided in an embodiment of the present application.
  • Vehicle 1000 battery 100, controller 200, motor 300;
  • Frame 10 longitudinal beam 11, through hole 111, steering gear 12, housing 121, steering rod 122, support sleeve 13, limiting part 14, flange 141, external thread 15, threaded connector 16, washer 17;
  • Car 1 front wheel 20 , steering knuckle 21 , first part 31 , second part 32 , third part 33 , fourth part 34 .
  • the frame is a frame structure spanning the front and rear axles of the car, commonly known as the girder, and is the base of the car. Generally, it consists of two longitudinal beams and several cross beams, and is supported on the wheels via the suspension device, the front axle and the rear axle.
  • the frame must have sufficient strength and rigidity to withstand the load of the car and the impact from the wheels.
  • the function of the frame is to support and connect the various assemblies of the automobile, keep each assembly in a relatively correct position, and bear various loads inside and outside the automobile.
  • the existing automobile frame needs to have both longitudinal beams and cross beams, that is, it needs to have both longitudinal beams in the direction of front and rear wheels and cross beams in the direction between the front wheels and the direction between the rear wheels.
  • the main structure of the machine is generally installed on the crossbeam in the direction between the front wheels.
  • some vehicles will be equipped with a sub-frame for installing and fixing the main body of the steering gear.
  • the inventor of the present application has noticed that whether it is the beam or the sub-frame, the overall mass of the vehicle will increase, and the increase in the mass of the vehicle also means that the fuel consumption will increase.
  • energy conservation and emission reduction are advocated globally. Under the general environment, resulting in a decline in product competitiveness.
  • the inventors of the present application found in the research that the torsional mode and rigidity of the vehicle can be guaranteed while reducing the weight of the vehicle body by combining the steering gear structure with the vehicle longitudinal beam.
  • the inventor of the present application found that the steering gear itself has good strength and rigidity through inspection and testing, so that the steering gear can be fixed between the longitudinal beams instead of the beam, and through reasonable structural settings, the two ends of the steering gear rod It is flexibly connected with the wheels.
  • the steering gear acts as a support for the frame beam to ensure the torsional mode and rigidity of the vehicle.
  • the structural integration of the beam and the steering gear on the existing vehicle body is simplified into a single steering gear structure, thereby reducing the weight of the vehicle body and achieving the purpose of light weight.
  • FIG. 1 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application.
  • the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.
  • the interior of the vehicle 1000 is provided with a battery 100 , and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000 .
  • the battery 100 can be used for power supply of the vehicle 1000 , for example, the battery 100 can be used as an operating power source of the vehicle 1000 .
  • the vehicle 1000 may further include a controller 200 and a motor 300 , the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, for starting, navigating and running the vehicle 1000 .
  • a vehicle frame 10 is provided, please refer to FIG. 2 for details, which shows the structure of the vehicle frame 10 provided by an embodiment of the present application.
  • the vehicle frame 10 includes a longitudinal beam 11 and a steering gear 12.
  • the steering gear 12 includes a housing 121 and a steering tie rod 122 slidably arranged in the housing 121.
  • the two ends of the housing 121 are respectively fixedly connected with the longitudinal beam 11. They respectively protrude from the outer side of the longitudinal beam 11 and are used for flexible connection with the wheels.
  • the steering tie rod 122 slides, it drives the wheels to turn.
  • the casing 121 of the steering gear 12 is sleeved on the outside of the steering rod 122.
  • the two ends of the casing 121 can be installed through the longitudinal beams 11, or can be fixedly connected with the longitudinal beams 11 through a connecting structure.
  • the casing 121 is fixed between the longitudinal beams 11, so as to Bearing pressure and torsional moments between the longitudinal beams 11.
  • Longitudinal beam 11 is arranged along the front and rear direction of the vehicle, is one of the key parts in the vehicle frame, and plays an important load-bearing role on the automobile.
  • Longitudinal beams are usually stamped from low-alloy steel plates, and the cross-sectional shape is generally groove-shaped, and some are made into Z-shaped or box-shaped cross-sections.
  • Steering machine 12 is when the driver turns steering wheel, helps driver exert oneself, to alleviate the driver's dynamic force when turning, reaches the machine of the easy and convenient purpose of the driver when driving.
  • Steering gear is mainly divided into rack and pinion steering and worm gear steering.
  • Power steering devices are generally divided into three types according to the driving mode, namely: electric motor power steering, rack and pinion hydraulic power steering and electrohydraulic power steering.
  • the two ends of the steering rod 122 are used to connect with the steering knuckle on the wheel hub.
  • the steering rod 122 is driven by electric motor, rack and pinion hydraulic drive or electrohydraulic drive, when the steering rod 122 slides relative to the housing 121, the two ends pull the wheel hub for steering. help.
  • the vehicle frame 10 Compared with the existing vehicle frame, the vehicle frame 10 provided by the embodiment of the present application cancels the cross beams arranged between the longitudinal beams, and by fixing the two ends of the outer shell 121 to the longitudinal beams 11, the attachment of the outer shell 121 to the longitudinal beams 11 is realized. Bearing effect, thereby ensuring the torsional mode and stiffness of the vehicle.
  • the longitudinal beam 11 is arranged on the inner side of the wheel, and the two ends of the steering rod 122 respectively protrude from the outer side of the longitudinal beam 11 for flexible connection with the outer wheel, so that the steering rod 122 slides in the casing 121 to drive the wheels at both ends to turn. This not only realizes the assembly and fixation of the steering gear 12 and the control of the steering of the wheels, but also ensures the torsional mode and rigidity of the whole vehicle.
  • the longitudinal beam 11 is provided with a through hole 111, the two ends of the shell 121 are fixed in the through hole 111, the steering rod 122 is penetrated in the through hole 111, and the two ends protruding from the outside of the through hole 111 .
  • the two ends of the shell 121 are fixed in the through hole 111, which not only realizes the assembly and fixing of the shell 121 and the longitudinal beam 11, but also ensures that the shell 121 plays a good role between the longitudinal beams 11.
  • the load-bearing effect can ensure the strength and rigidity of the overall structure of the vehicle frame 10, so that the whole vehicle can have a good torsional mode during subsequent assembly.
  • the two ends of the shell 121 can also be screwed or welded to the longitudinal beam 121 through threaded connectors.
  • the beam 11 is fixed, and the specific connection structure and connection method are not limited, as long as the steering tie rod 122 can protrude from the outside of the longitudinal beam 11, and the vehicle frame 10 can meet the requirements of vehicle structural strength and the like.
  • FIG. 3 shows the connection structure between the two ends of the shell 121 and the through hole 111 in the vehicle frame 10 according to an embodiment of the present application.
  • a support sleeve 13 is disposed in the through hole 111 , and both ends of the housing 121 are fixed in the support sleeve 13 .
  • the structure of the longitudinal beam at the through hole 111 is relatively weak, and the stability is poor, so by setting the support sleeve 13 in the through hole 111 The supporting sleeve 13 supports the inner wall of the through hole 111 , thereby improving the structural strength of the longitudinal beam 11 at the through hole 111 , and ensuring that the vehicle frame 10 has a good and stable bearing capacity.
  • the outer diameter of the support sleeve 13 can be slightly larger than the inner diameter of the through hole 111, and the support sleeve 13 is arranged in the through hole 111 by riveting, on the one hand, the stability of the support sleeve 13 and the through hole 111 can be ensured. On the other hand, the support sleeve 13 can fully and effectively support the through hole 111 .
  • the supporting sleeve 13 is preferably made of steel, which has high structural strength and can ensure good supporting capacity of the supporting sleeve 13 .
  • the support sleeve 13 is welded to the stringer 11 .
  • the limit capacity is relatively poor. Therefore, in order to avoid the support sleeve 13 and the through hole
  • the connection between the holes 111 is loose, causing the support sleeve 13 to slip and the structure of the steering gear 12 to be damaged.
  • the support sleeve 13 is welded to the longitudinal beam 11 to ensure that the support sleeve 13 is fully limited in the axial direction. Furthermore, the stability of the assembly connection between the steering gear 12 and the longitudinal beam 11 is improved, and the overall strength and bearing capacity of the vehicle frame 10 are ensured.
  • the welding of the support sleeve 13 and the longitudinal beam 11 can adopt the mode of welding seam connection, specifically, along the outer edge circumferential direction of the openings at both ends of the through hole 111 on the longitudinal beam 11, weld with the support sleeve 13 to ensure that the support sleeve 13 and the longitudinal beam 11 are fully and effectively welded and fixed, and such a welding method is easy to operate and is conducive to improving the efficiency of welding assembly.
  • the two ends of the housing 121 are provided with limiting portions 14, and the limiting portions 14 abut against the inner side walls of the longitudinal beams 11.
  • the two ends of the housing 121 are provided with a limiter 14, and the inner wall of the longitudinal beam 11 is abutted by the limiter 14, so that the housing 121 of the steering gear 12 is aligned with the longitudinal beam 12.
  • the beam 11 is assembled and connected, it is limited and fixed in the axial direction.
  • the limiting portion 14 includes a flange 141 or a protrusion disposed on the housing 121 .
  • Flange is otherwise known as flange flange or flange.
  • Flanges are parts that are connected to each other between shafts and are used for connection between pipe ends; they are also useful for flanges on equipment inlets and outlets, And can be used as connection between two equipments, example reducer flanges.
  • Flange connection or flange joint refers back to the detachable connection of flange, Gasket and bolt as a team of combined sealing structure.
  • Pipe flange refers back to the flange used for piping in the pipeline installation, And used on the equipment refers to the inlet and outlet flange of the equipment. There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets.
  • Flanges are divided into threaded (screw connection) flanges, welding flanges and clip flanges.
  • Flanges are usually employed in pairs, very poor-work pipes can use wire flanges and welding flanges with pressures greater than 4 kg. Add sealing points within the two flanges, immediately after tighten with bolts. Flanges with different pressures have different thicknesses, and the bolts they use are also different.
  • flange connection All connecting parts that are closed at the same time by using bolts around the two planes are generally called "flanges".
  • the connection of ventilation pipes, such parts can be called “flange parts”. But this connection is only a part of the equipment, Such as the text between the flange and the pump, It is not easy to call the pump 'flange parts'. Smaller ones such like valves Wait, always be called 'flange parts'.
  • the flange 141 in the embodiment of the present application can be sleeved and fixed on both ends of the casing 121 of the steering gear 12 by riveting or welding. fixed.
  • connecting holes can be arranged in the circumferential direction on the flange 141, and the flange 141 can be further connected and fixed with the longitudinal beam 11 by passing through the connecting holes; of course, the outer edge of the flange 141 can also be connected with the longitudinal beam 11 are welded together, the stability of the connection between the flange 141 and the longitudinal beam 11 can also be improved, thereby fully ensuring the limit ability of the shell 121 .
  • the limiting part 14 can also form ring-shaped or other shaped protrusions by protruding outward from the surfaces at both ends of the shell 121 , and through the connection between the protrusion and the inner side wall of the longitudinal beam 11
  • the abutment realizes the axial limit of the casing 121 , and since the protrusion is integrated with the casing 121 , the structural stability is higher, and the limiting effect of the connection between the casing 121 and the longitudinal beam 11 is better.
  • the protrusions can be further connected and fixed to the longitudinal beam 11 through threaded connectors or fixed by welding, so as to fully ensure the stability of the assembly connection between the shell 121 and the longitudinal beam 11, and improve the overall strength and stability of the frame 10. Carrying capacity.
  • both ends of the housing 121 protrude from the outside of the stringer 11, and the housing 121 is provided with an external thread 15 at a position protruding from the outside of the stringer 11.
  • the external thread 15 A threaded connection piece 16 is connected to the top, and the threaded connection piece 16 abuts against the outer side wall of the longitudinal beam 11 .
  • Threaded connection is a widely used detachable fixed connection, which has the advantages of simple structure, reliable connection, and convenient assembly and disassembly.
  • the traditional thread inspection method is to use thread gauges for contact or use a universal tool microscope for manual measurement.
  • the workload is heavy, the working efficiency is low, and the measurement results are easily affected by human beings.
  • the thread gauge is easy to wear, which affects the measurement accuracy, and the cost of replacing the gauge is also high.
  • automatic thread detection equipment is needed to solve the bottleneck problem of thread detection, so as to improve the benefits of fastener enterprises.
  • the thread can be divided into triangular, rectangular, trapezoidal and zigzag threads, etc.
  • the winding direction of the helix it can be divided into left-handed thread and right-handed thread. It is stipulated that when the thread is upright, the helix rises to the right to become a right-handed thread, and to rise to the left to become a left-handed thread.
  • Right-handed threads are generally used in machinery manufacturing, and left-handed threads are only used when there are special requirements.
  • the number of helices it can be divided into single thread and equidistant multi-thread. For the convenience of manufacturing, the thread generally does not exceed 4 lines.
  • the two ends of the shell 121 are protruded from the outside of the stringer 11, and the external thread 15 is set at the position where the shell 121 protrudes from the outside of the stringer 11, through the screw thread
  • the connecting piece 16 is connected to the external thread 15 on the one hand, and on the other hand, abuts against the outer side wall of the longitudinal beam 11.
  • the threaded connecting piece 16 can use a nut, for example, to realize the connection between the part of the shell 121 protruding from the outer side of the longitudinal beam 11 and the longitudinal beam 11. The assembly connection between them ensures the structural stability of the steering gear 12 in the vehicle frame 10, thereby improving the overall strength and stability of the vehicle frame 10.
  • the shell 121 is provided with a gasket 17 between the threaded connector 16 and the outer side wall of the longitudinal beam 11, and the two sides of the gasket 17 are respectively connected to the longitudinal beam.
  • the outer wall of the beam 11 abuts against the threaded connector 16 .
  • Washer refers to the part between the connected part and the nut. It is generally a flat metal ring, which is used to protect the surface of the connected part from being scratched by the nut, and to disperse the pressure of the nut on the connected part.
  • Washers are divided into: flat washers-class C, large washers-class A and C, extra-large washers-class C, small washers-class A, flat washers-class A, flat washers-chamfered-class A, steel structures with high Strength washers, spherical washers, conical washers, square bevel washers for I-beams, square bevel washers for channel steel, standard spring washers, light spring washers, heavy spring washers, internal tooth lock washers, internal serrated lock washers, External tooth lock washers, external serrated lock washers, single ear stop washers, double ear stop washers, outer tongue stop washers, stop washers for round nuts.
  • Flat washers are generally used in connecting parts, one is soft and the other is hard and brittle. Its main function is to increase the contact area, disperse the pressure, and prevent the soft texture from being crushed.
  • the basic function of the spring of the spring washer is to give a force to the nut after the nut is tightened to increase the friction between the nut and the bolt.
  • Spring washers are widely used in load-bearing and non-load-bearing structures of general mechanical products. They are characterized by low cost and easy installation, and are suitable for parts that are frequently assembled and disassembled. However, spring washers have low anti-loosening ability, especially when reliability is required. High in products with low adoption.
  • the washer 17 By arranging the washer 17 between the threaded connection 16 and the outer wall of the longitudinal beam 11, on the one hand, it can avoid the frictional damage of the threaded connection 16 to the surface of the longitudinal beam 11 during the tightening process;
  • the pressure acting on the outer wall of the longitudinal beam 11 enables the threaded connector 16 to be tightened to a greater extent without causing damage to the longitudinal beam 11 , so that the connection structure between the shell 121 and the longitudinal beam 11 is more stable and reliable.
  • the gasket 17 is welded to the longitudinal beam 11 and the shell 121 respectively.
  • the stability of the relative position between the gasket 17, the stringer 11, and the shell 121 can be further ensured, so that the connection structure between the shell 121 and the stringer 11 is stable and reliable, ensuring The overall structural strength of the vehicle frame 10 and the torsional mode of the entire vehicle.
  • the gasket 17 may be welded to the longitudinal beam 11 along the outer peripheral direction, and welded to the surface of the shell 121 along the inner peripheral direction, so as to fully ensure the stability of the gasket 17 .
  • a car 1 is provided. Please refer to FIG. 4 for details, which shows the structure of a car 1 provided by an embodiment of the present application.
  • the automobile 1 comprises a vehicle frame 10 as described in any one of the above embodiments.
  • the vehicle frame 10 cancels the crossbeams arranged between the longitudinal beams, and the two ends of the housing 121 are fixedly connected to the longitudinal beams 11 to realize the pairing of the housing 121.
  • the bearing function of the longitudinal beam 11 further ensures the overall torsional mode and stiffness of the automobile 1 .
  • the longitudinal beam 11 is arranged on the inner side of the wheel, and the two ends of the steering rod 122 respectively protrude from the outer side of the longitudinal beam 11 for flexible connection with the outer wheel, so that the steering rod 122 slides in the casing 121 to drive the wheels at both ends to turn. This not only realizes the assembly and fixation of the steering gear 12 and the control of the steering of the wheels, but also ensures the overall torsional mode and stiffness of the automobile 1 .
  • the automobile 1 also includes a front wheel 20 arranged on the outside of the longitudinal beam 11, the front wheel 20 has a steering knuckle 21, and the two ends of the steering rod 122 are rotationally connected to the steering knuckle 21, When the steering rod 122 slides, the steering knuckle 21 drives the front wheels 20 to turn.
  • Steering knuckle also known as "claw horn" is one of the important parts in the steering axle of a car, which can make the car run stably and transmit the driving direction sensitively.
  • the function of the steering knuckle is to transmit and bear the front load of the car, support and drive the front wheel to rotate around the kingpin to turn the car. When the car is running, it bears variable impact loads, so it is required to have high strength.
  • the steering knuckle is the hinge for the steering of the wheel, generally in the shape of a fork.
  • the upper and lower forks have two coaxial holes for installing kingpins, and the steering knuckle journal is used for installing wheels.
  • the two lugs of the pin hole on the steering knuckle are connected with the fist-shaped parts at both ends of the front axle through the kingpin, so that the front wheel can deflect at a certain angle around the kingpin to steer the car.
  • a bronze bushing is pressed into the pin hole of the steering knuckle, and the lubrication of the bushing is lubricated by injecting grease from the grease nipple installed on the steering knuckle.
  • a bearing is installed between the lower ear of the steering knuckle and the fist part of the front axle.
  • Adjusting shims are also installed between the upper ear of the steering knuckle and the fist part to adjust the gap therebetween.
  • the two ends of the steering rod 122 protruding from the outer side of the longitudinal beam 11 are rotationally connected with the steering knuckle 21 to realize the control of the steering rod 122 on the steering of the front wheels, thereby reducing the overall mass of the automobile 1 and satisfying the work of the steering gear 12 during assembly. location conditions.
  • the automobile 1 further includes a leaf spring, the leaf spring is fixedly connected to the housing 121 and the longitudinal beam 11 , and both ends of the leaf spring are fixedly connected to the front wheel 20 .
  • Leaf spring referred to as leaf spring, is a leaf spring composed of no less than one piece of spring steel.
  • Leaf springs are commonly used in wheeled vehicle suspensions and were originally called laminated or bracket springs, sometimes called semi-elliptical or trolley springs, and are one of the oldest forms of springs.
  • the leaf spring is a long circular arc spring steel with a rectangular cross section. In the most common configuration, the center of the arc provides the location of the axle, while rings formed at either end attach to the vehicle chassis.
  • leaf springs can be made from multiple leaves stacked together, usually with progressively shorter leaves.
  • Leaf springs can be used for positioning and a certain degree of damping as well as spring function.
  • the leaf springs can be attached directly to the frame at both ends, or directly at one end, usually the front end, and the other end via a shackle, short swing arm. Elasticity introduces a tendency for the blade to elongate when compressed, resulting in a softer elastic.
  • Some springs terminate in a female end, called a spoon end, which carries the rotating member.
  • each spring leaf When the leaf spring is installed in the automobile suspension and the vertical load it bears is positive, each spring leaf is deformed by force and has a tendency to arch upward. At this time, the axle and frame are close to each other. As the axle and frame move away from each other, the positive vertical loads and deflections on the leaf springs gradually decrease.
  • the two ends of the leaf spring are respectively fixedly connected to the two front wheels 20, the middle first part 31 and the second part 32 are respectively fixedly connected to the two longitudinal beams 11, and the third part 33 and the fourth part 34 are respectively fixedly connected with the housing 121 , and the specific fixed connection method can be fixed by a threaded connection or a threaded connection combined with welding.
  • the first feature may be in direct contact with the first feature or the second feature "on” or “under” the second feature. Indirect contact through intermediaries.
  • “above” and “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply mean that the first feature is less horizontally than the second feature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Châssis comprenant des poutres longitudinales (11) et un mécanisme de direction (12). Le mécanisme de direction (12) comprend un boîtier (121) et une liaison de direction (122) disposée de manière coulissante à l'intérieur du boîtier (121), deux extrémités du boîtier (121) étant respectivement reliées de manière fixe aux poutres longitudinales (11) ; et deux extrémités de la liaison de direction (122) faisant saillie respectivement à partir d'un côté extérieur de chacune des poutres longitudinales (11) et étant utilisées pour être reliées de façon mobile à des roues, et la liaison de direction (122) entraînant les roues pour les diriger lorsqu'elle coulisse. Le châssis peut réduire le poids d'une carrosserie automobile, et peut assurer un mode de torsion et une rigidité d'une voiture particulière tout entière. L'invention concerne en outre une voiture particulière comprenant le châssis.
PCT/CN2022/111490 2021-09-23 2022-08-10 Châssis et voiture particulière WO2023045603A1 (fr)

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EP22871661.9A EP4289705A4 (fr) 2021-09-23 2022-08-10 Châssis et voiture particulière
US18/351,070 US12091087B2 (en) 2021-09-23 2023-07-12 Vehicle frame and vehicle

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CN202122307742.7U CN216002767U (zh) 2021-09-23 2021-09-23 一种车架及汽车
CN202122307742.7 2021-09-23

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US18/351,070 Continuation US12091087B2 (en) 2021-09-23 2023-07-12 Vehicle frame and vehicle

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CN216002767U (zh) 2021-09-23 2022-03-11 宁德时代新能源科技股份有限公司 一种车架及汽车
CN216184315U (zh) * 2021-09-29 2022-04-05 宁德时代新能源科技股份有限公司 悬架结构、车辆
WO2024065288A1 (fr) * 2022-09-28 2024-04-04 华为技术有限公司 Planche à roulettes et véhicule

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EP4289705A4 (fr) 2024-10-30
US20230356781A1 (en) 2023-11-09
EP4289705A1 (fr) 2023-12-13
US12091087B2 (en) 2024-09-17
CN216002767U (zh) 2022-03-11

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